Time-controlled shifting mechanism.



APPLICATION TILED JULY 3, 1914.

Patented Jan. 5, 1915'.

. Inventor, l?- 6. Mz'lizr, by

HE NORRIS PETERS 60., PHOTO-LITHQ. WASHINGYON, n. r

- UNITED STATES PATENT OFFICE.

' EDWARD e. MILLER, or CHARLES CITY, Iowa.

To all whom it may concern: Be it known that I, EDWARD G. MILLER, a citizen of the United States of America, and a resident of Charles City, Floyd county, Iowa, have inventedcertain new and useful Improvements in Time-Controlled Shifting Mechanisms, of which the following is a specification. i 1

My invention relates to improvements in draft regulating means for furnaces and the like, and the object of my improvement is to provide operative-mechanisms adapted to be actuated by a time clock, and which may be set so as to automatically release said mechanisms and permit the same to act in a certain way upon the draft and damper doors of a furnace or other'movable object to be actuated. This object I have accomplished by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawing, which is the representation of my improved regulating device as operatively connected to the draft-door and damper of the furnace.

My improved device comprises a clock 1 mounted within a wall casing?) and actuating a movable arm 2. The trip arm 2 is adapted to be moved by the mechanism of the clock, not shown, at a time desired according as the said mechanism is appropriately set in advance.

The numeral 4 denotes a medially pivoted lever, the extremity of whose lower end is curved at 5 to receive within it the short end of a pivoted lever 6. The long arm of the lever 4 extends upwardly, and has a terminal eye to which isconnected one end of the cable 7, which latter is passed over a pulley 8 on the inside of said casing and extends downwardly through a hole in the bottom of the casing, with a weight 9 secured to its other end. A cable 10 has one end connected to an eye in the outer end of the long arm of the lever 6, said cable being passed over another pulley 11 located in said casing to depend thence downwardly through a hole in the bottom of the casing, and having a heavier weight 12 on its'lower end.

The numeral 16 denotes a cable passed about pulleys 17 and 20, and whose ends are connected, respectively, to the draft-door 18 and the damper 21 of the furnace 19. The cable 13 is passed about pulleys let and 15,

and has one end connected to the cable 16' While the oth end s eonnected to the cab e Specification of Letters Patent.

TIME-CONTROLLED sHIrTInG MECHANISM.

. PatentedJan.5, 1915.

- Application filed July 3, 1914; Serial No. 848,899.

10. It will be seen that when the parts are in engagement as shown in said figure, that the weights 9 and 12 are hanging in equilibrium, although the weight 12 is the heavier. lVhen the arm 2 is moved by the mechanism of the clock at the predetermined time, its end moves to release the hooked end 5 of the lever 4, permitting the draft-door 18 of the furnace 19 is lifted,

while the slackening of the other end of the cable 16, on account of the upward pull thereon, permits the damper 21 to descend. Of course, when said parts are set as shown in the drawings, the cable 16 is shifted back, I

lowering the draft-door 18 and opening the damper 21.

It is obvious that the above described mechanism may be applied to shift any other description of movable body by means of the time controlled means, as desired.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In combination, a medially pivoted lever having one end provided with a catch, a. weight suspended from the other end of said lever, a movable latch detachably engaged with said catch, a heavier weight suspended therefrom, a movable connection between the heavier weight and ,an object to be moved, a stop movably interposed in the path of movement of said movable catch,

and time controlled means for shifting said stop at a predetermined time to release said catch from said latch and permit said heavlonger arm of the second-mentioned lever and passed about said sheave, a weight sus- I end o f the" first-mentioned lever, adaptedf'tof relea'se the latter at a predetermined time to permit the first-mentioned weight to rock the lever free from said second-mentioned lever: 3 -5 '1 '3. The combination, a medially-pivoted =lever having one end provided with a catch, a cable connected to'the other: end of said lever,-ya Weight suspended from said cable,. asecond medially-pivoted lever having one end detachably engaged- :With the-catch on thefirst-mentioned lever, a cable connected to the other end of the second-menti0ned Eleven, a relatively heavier weight suspended,

from the second-mentioned ca ble',"" a movable body, a cable connected between thef movable body and the second-mentioned cable, 7 4 I a movable stopinterposed in'vthepath of means for shifting said stop 'at" a--:predetermined time to release said catch bearing lever totrip the second-mentioned lever and permit the second mentioned Weight to shift the third-mentioned" cable and said movable body; a t' .Signejdat Charles Oity,{Ia-., this 20th-.day

of June, 1914.

Witnesses J.,E.-BURN T H. T; BALDWIN.

otthlsfpatent inay be obtained for five cents each, by addrssingjthe .G9mm ission r :o'f fatexi'tl,

D ARD lVlILLER. 

